Microsoft is one of the companies filing the most patents and domain names every year across the world, so it's no surprise that two domain names associated with the Xbox were discovered.
Simultaneously deposited yesterday and XboxAb.com XboxAb.net still lead on any website, it is impossible to know for what purpose they were created. The Redmond company had already given us the same time last year before the revelation of the Xbox One, then a few weeks before E3 registering domain names we have never heard of.
It is therefore possible that the giant confuses just a little more than a month of the great mass of the video game in Los Angeles, but it could also be a new service for our Xbox One. Only the future will tell us what it is.